On the validity of macroscopic models
The validity of macroscopic models in the limit of large mean-free path is examined by solving a one-dimensional model equation, where the term v.del f(1) is retained in the kinetic equation. A standard thirteen-moments approximation yields accurate results in all collisionality regimes if the fluid velocity is sufficiently small. In contrast, the Chapman-Enskog scheme is only accurate in the collision-dominated regime.
Bibliographic Reference: Report: IPP 6/281 EN (1989)
Availability: Available from Max-Planck-Institut für Plasmaphysik, 8046 Garching bei München (DE)
Record Number: 198910991 / Last updated on: 1994-12-01
Original language: en
Available languages: en